News

  1. Physics

    A galactic smashup might explain galaxies without dark matter

    Scientists are debating whether a trail of galaxies reveals the origins of two weird dark matter–free galaxies.

    By Emily Conover
  2. Science & Society

    COVID-19 has killed a million Americans. Our minds can’t comprehend that number

    We intuitively compare large, approximate quantities but cannot grasp such a big, abstract number as a million U.S. COVID-19 deaths.

    By Sujata Gupta
  3. Anthropology

    A Denisovan girl’s fossil tooth may have been unearthed in Laos

    A molar adds to suspicions that mysterious hominids called Denisovans inhabited Southeast Asia's tropical forests.

    By Bruce Bower
  4. Particle Physics

    High-energy neutrinos may come from black holes ripping apart stars

    Where extremely energetic neutrinos originate from is a mystery.